A man has claimed the Earth will change significantly when the Great Sphinx of Giza is unlocked after saying he is an alien reborn.

Boriska Kipriyanovich, 21, said he lived on Mars in a previous life and was able to speak within months of being born and constantly spoke of alien-life without ever being taught it, the Metro reported.

He goes on to say he had visited Earth while working as a pilot and had a close connection with ancient Egyptians and predicted life on Earth will change when the Great Sphinx of Giza is unlocked.

Speaking about the nuclear war which ''wiped out'' his past alien civilization, he said: 'No, I have no fear of death, for we live eternally.

''There was a catastrophe on Mars where I lived. 'People like us still live there. There was a nuclear war between them.

''Everything burnt down. Only some of them survived. They built shelters and created new weapons.''